Owner manual

Diagnostics and Troubleshooting 7-1
CHAPTER 7
Diagnostics and Troubleshooting
7.1 Drive Faults and Corrective Actions
The drive has two status LEDs that can be used to diagnose drive faults. Table 7.1
lists some possible drive faults and their corrective actions.
To reset a fault, toggle the ON/OFF switch to OFF. When the switch is returned to the
ON position, the drive will attempt to restart.
Table 7.1 – Drive Status Indicators
Status
Motor
LED
(M)
Drive
LED
(D) Possible Cause Corrective Action
Drive is
running
ON ON Drive is running (normal status).
Drive runs,
but not at
commanded
speed
ON ON Internal speed reference set
improperly
External peed reference not present
HI/LO input has voltage applied
Current limit set too low
V/Hz jumpers set improperly
Excessive load
Input voltage too low (< 25 VDC,
nominal)
Power source not delivering enough
current
Check jumper settings (J1 - J8).
Check speed reference jumpers (J1, J17 - J19),
POT1 and POT2.
Remove input voltage.
Increase J13 - J16 settings.
Set J9 - J12 to proper motor setting.
Reduce load.
Increase input voltage.
Supply appropriate input current.
Drive is
stopped
ON ON Overtemperature - result of
inadequate air flow, excessive
ambient temperature, and/or
excessive load current
Overvoltage - voltage exceeds 32
VDC
Let drive cool down, then cycle ON/OFF input.
Unit will automatically restart when voltage
returns to normal input levels.
ON OFF Internal Drive Fault Cycle power. If fault repeats, replace drive.
OFF ON Overcurrent - sustained overload
exceeding limits in table 2.3.
Instantaneous Overcurrent (IOC) -
short circuit or other fault applied to
the output
Ground Fault
Reduce current load.
Check output circuitry; reduce current load.
Check motor and motor wiring.
OFF OFF Input power is too low or ON/OFF
input is low (OFF).